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Low temperature heat-to-power unit

The low-temperature module converts heat of hot water into electric power. Heat is delivered from an engine jacket cooling or from exhaust gases of a gen set to the ORC module via a preheater/evaporator unit, which cools the 95°C hot water in a primary circuit. Silicone thermal oil serves as a working fluid for preheating and evaporating in a secondary circuit. Steam enters a twin-screw device, the main unit of an ORC system, in which steam is cooled down. The released energy is converted into the rotation energy. After steam has passed through the screw device, it enters an oil separator and then a condenser, where it condenses. The condensation heat of the working fluid is removed to an air-cooled condenser. ORC modules allow to increase electric power of a  plant to 9% gross or 6,5% net. 

Technical Details
Features
Complete set

Electrical efficiency, %:

9

Technical Details

Electrical efficiency, %:

9

Features

Primary circuit coolant – water

Secondary circuit coolant – silicone thermal oil

Heat from engine jacket or exhaust gases

Complete set

Soundproof container

Twin-screw expander set with oil lubricated and sealed design, hydrodynamic bearings

Asynchronous generator with fixed connection to the expander shaft

Feed pump to hold the circulating process up as multi stage centrifugal pump with frequency converter for high pump efficiencies in part load operation

Preheater/evaporator as plate heat exchanger

Measuring and regulation supplies for pressure, temperature, internal flow of organic working medium and filling levels

Insulation with aluminium foil faced insulation of all parts with a surface temperature exceeding 60°C

Self-supporting steel frames on which the above-mentioned subassemblies are pre mounted

Control Cabinet System

Air cooled condenser in V-shape configuration for direct condensation of the ORC working fluid

Other goods

High temperature heat-to-power unit